DRM framebuffer emulation creates one framebuffer per DRM card.
All outputs of vc4 are part of the same card, and therefore share one framebuffer.
If you want 2 different buffers to be displayed on the two HDMI outputs, then you need to be looking at the DRM APIs and how to add framebuffers. kmsxx/kmstest or drmu are two examples of how to drive DRM, or the original is modetest that forms part of libdrm.
All outputs of vc4 are part of the same card, and therefore share one framebuffer.
If you want 2 different buffers to be displayed on the two HDMI outputs, then you need to be looking at the DRM APIs and how to add framebuffers. kmsxx/kmstest or drmu are two examples of how to drive DRM, or the original is modetest that forms part of libdrm.
Statistics: Posted by 6by9 — Wed Jan 17, 2024 2:41 pm